willey



(No Model.) V

R. TREFETHEN & J. M. WILLEY.

HOT AIR REGISTER BORDER. No. 268,443. Patented Aug. 29, 1882.

"K. J WITNESSES J lN VgNTnH i Mrs warns Aren't Fries.

ROMANZO TREFETHEN AND JACOB M. WVILLEY, OF DOVER, N. H.

HOT AlR REGISTER BORDER.

SPECIFICATION forming part of Letters Patent No. 263,443, dated August29, 1882.

Application filed J one 10, 1882. (N0 model.)

To all whom it may concern:

Be it known that we, ROMANZO TREFETHEN and JACOB M. WILLEY, citizens ofthe United States, residing at Dover, in the county of Stratford andState of New Hampshire, have invented an Improvement in Hot-Air-RegisterBorders, of which the following is afull, clear, and exact description,reference being had to the accompanying drawings, making part of thisspecification, in which- Figure 1 is aperspective "iew of ourregister-border, a portion of one side being broken away to show theinterior construction. Fig. 2 is a transverse vertical section throughthe same. Fig.3 isahorizontal section through the same on the line a; 00of Fig. 2.

Hot airregister borders have heretofore been usually made of soapstoneor marble. These materials are, however, liable to fracture it subjectedto a sudden shock or blow, or if a heavy weight is placed thereon, andare, moreover, quite expensive, marble being the more costly of the twomaterials on account of its hardness and the consequent labor of cuttingand smoothing it. Furthermore, in setting these borders it is customaryto apply wooden cross-braces between the floor-timbers to form rests forsupporting the ends of the border, and thus reduce the liability ofbreakage.

Our invention consists in a register-border composed of artificial-stonecompound or other suitable plastic substance, and having em beddedwithin it a metallic strengthening-frame extending entirely around it,whereby a very much stronger and more durable borderis produced at agreatly-reduced cost, and the necessity of using braces to support theends of the border, as heretofore, is entirely avoided.

In the said drawings, A represents a hot-airregister border or frame,which is of the usual form, and is preferably composed ofartificialstone compound molded. to the required shape; but it may bemade of other suitable plastic substance which,when molded anddried,will possess the requisite degree of hardness and stability.

In making our border we employ a suitable iron mold, which is firstpartially filled with the plastic substance of which theborder is to becomposed, after which a strong metal frame, B, adapted to extendentirely around the border, is embedded therein and the mold then filledup with the plastic substance, which is then subjected toaheavypressure, after which the article is withdrawn from the mold and allowedto dry and harden, when it is ready for use.

We prefer to make the metallic strengthening-frame B of gas-pipe onaccount of its lightness and strength; but it may be composed of one ormore bars or pieces of iron, steel, or othersuitable metal, of square,flat, half-round, or other convenient form in cross-section.

A register-border made as above described can be furnished at a verymuch less cost than one formed of soapstone or marble, is very neat andsmooth, and can be made of any color desired, while the embeddedmetallic frameB renders it entirely free from liability of being brokenby a sudden shock or strain, and enables us to dispense with the woodenbraces heretofore placed between the floor-timbers to support the endsof the border.

We are aware that heretofore an iron register with flanges has beensecured to an iron register border having lapping flanges by means of aheavy inserted packing of plasterot-paris.

What we claim as our invention, and desire to secure by Letters Patent,is-

As a new article of manufacture, a registerborder composed ofartificial-stone compound or other suitable plastic substance, andhaving embedded within it a metallic strengthening-frame, B, extendingaround it, substantially in the manner and for the purpose set forth.

Witness our hands this 6th day of June, A. D. 1882.

ROMANZO TREFETHEN. JACOB M. WILLEY.

In presence of- J. M. ORosBY, V. H. MODANIEL.

